CN109599402A - Display base plate and display device - Google Patents
Display base plate and display device Download PDFInfo
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- CN109599402A CN109599402A CN201811465167.XA CN201811465167A CN109599402A CN 109599402 A CN109599402 A CN 109599402A CN 201811465167 A CN201811465167 A CN 201811465167A CN 109599402 A CN109599402 A CN 109599402A
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- 230000007704 transition Effects 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims description 14
- 239000004642 Polyimide Substances 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000002210 silicon-based material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 230000007423 decrease Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 25
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
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- 238000009825 accumulation Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1218—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition or structure of the substrate
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/311—Flexible OLED
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Microelectronics & Electronic Packaging (AREA)
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- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention belongs to field of display technology, and in particular to a kind of display base plate and display device.The display base plate includes substrate, the substrate includes at least viewing area, the substrate forms the multiple islands for separating with aperture and connecing with bridging in the viewing area, wherein the substrate of at least two different zones of the viewing area has different elasticity modulus.The display base plate can effectively solve the problem of stress concentration in the intersection of viewing area different zones bridge opening, to solve the display effect difference because of caused by the spacing difference that tensile deformation unevenly causes between pixel, achieve the purpose that display compensation；Further, by the structure for changing transition region between viewing area and non-display area, so that its elasticity modulus from non-display area to viewing area uniformly successively decreases, display base plate is solved in the problem of stress concentration of viewing area and the intersection of non-display area, is further ensured that display effect.
Description
Technical field
The invention belongs to field of display technology, and in particular to a kind of display base plate and display device.
Background technique
With technical solution, there is the research shown to stretchable (Stretchable).Stretchable display is inevitable
Be related to display base plate (Substrate), by being produced on display element in the stretchable substrate with aperture, by
The deformation of aperture provides whole deformation quantity.The stretchable main structure of display is island and bridge, is realized and is drawn by island and bridge structure
Stretch performance.Specifically, being by luminescent device preparation on island, metal routing is prepared on bridge.To guarantee display driving, showing
The fringe region of substrate also retains the region (Gate On Array) GOA or circuit trace region of non-aperture.
In the prior art, the bore size of viewing area all areas is the same, during stretching, since the conduction of power exists
Opening area can generate inhomogeneous deformation, cause the deformation degree in different zones aperture different, cause strain uneven.Aobvious
Show the central area in area, the deformation quantity of aperture is larger, and the spacing between luminescent device is larger；Fringe region in viewing area, is opened
The deformation quantity in hole is smaller, and the spacing between luminescent device is small compared to central area.Test discovery, the dependent variable for deforming maximum point are
2 times or so of the dependent variable of smallest point are deformed, the spacing between pixel caused by the differential deformation phenomenon is different, will cause aobvious
Show the difference of effect.
How to reduce the spacing difference between pixel, guarantees that display effect becomes a technical problem to be solved urgently.
Summary of the invention
The technical problem to be solved by the present invention is to for above-mentioned deficiency in the prior art, provide a kind of display base plate and aobvious
Showing device, display effect caused by the spacing difference caused by can effectively solve because of tensile deformation non-homogeneous strain between pixel are poor
It is different, achieve the purpose that display compensation.
Solving technical solution used by present invention problem is the display base plate, including substrate, and the substrate is at least
Including viewing area, the substrate forms the multiple islands for separating with aperture and connecing with bridging in the viewing area, wherein described
The substrate of at least two different zones of viewing area has different elasticity modulus.
Preferably, the substrate is divided into multiple aperture areas in the viewing area, has not in the different aperture areas
Same elasticity modulus.
Preferably, the substrate is alternatively set as the first elasticity modulus and the second springform in multiple aperture areas
Amount, first elasticity modulus are not equal to second elasticity modulus.
Preferably, the substrate is in the different aperture area of elasticity modulus: the island is of the same size, phase
The bridge between the adjacent island has different length.
Preferably, the substrate is in the different aperture area of elasticity modulus: the island has different sizes, phase
The bridge between the adjacent island has different length.
Preferably, the substrate is in the identical aperture area of elasticity modulus: the island is of the same size, phase
Bridge length having the same between the adjacent island.
Preferably, the substrate is in the different aperture area of elasticity modulus, the biggish aperture of elasticity modulus
The area of the aperture in area is less than the area of the aperture of the lesser aperture area of elasticity modulus.
Preferably, the length of the bridge is equal to the width of the aperture, and the width on the island is greater than the width of the bridge,
The width of the bridge is at least the width of a cabling.
Preferably, the substrate further includes the non-display area positioned at the viewing area two sides, and the non-display area includes
The transition region adjacent with the viewing area, the substrate are greater than the springform of the viewing area in the elasticity modulus of the transition region
Measure and be less than the elasticity modulus in other regions of non-display area.
Preferably, the elasticity modulus of the transition region is being directed toward other regions of non-display area by the viewing area
It is gradually increased on direction.
Preferably, the substrate is formed in the transition region and is separated with via hole and with the multiple of service bridge connection
Island is assisted, the spacing between the adjacent auxiliary island is different from the spacing between the adjacent island.
Preferably, the auxiliary island is similar with the island.
Preferably, the substrate is provided with auxiliary film corresponding to above the transition region, the thickness of the auxiliary film
Degree is incremented by the direction for being directed toward other regions of non-display area by the viewing area.
Preferably, the auxiliary film uses silicon nitride material, silica material, polyimide material or titanium metal material
At least one of formed.
A kind of display device comprising above-mentioned display base plate, for being arranged luminescent device above the island, on the bridge
Side is for being arranged the cabling of the luminescent device.
The beneficial effects of the present invention are:
The display base plate can effectively solve the problem of stress concentration in the intersection of viewing area different zones bridge opening, to solve
The certainly display effect difference because of caused by the spacing difference that tensile deformation unevenly causes between pixel reaches the mesh of display compensation
's；
Further, by changing the structure of transition region between viewing area and non-display area so that its from non-display area to
The elasticity modulus of viewing area uniformly successively decreases, and solves display base plate and asks in the stress of viewing area and the intersection of non-display area concentration
Topic, is further ensured that display effect.
Detailed description of the invention
Figure 1A, Figure 1B are the structural schematic diagram of display base plate in the embodiment of the present invention 2；
Fig. 2 is the structural schematic diagram on island in Figure 1A, aperture and bridge；
Fig. 3 is to show the aperture area of dual extension-compression modulus and its schematic diagram of deformation in the embodiment of the present invention 2；
Fig. 4 is the schematic diagram of unitary elasticity modulus aperture area and its deformation；
Fig. 5 is the forces testing result of the display base plate in the embodiment of the present invention 2 to the island of different parameters, bridge and aperture
Figure；
Fig. 6 is to show the aperture area of dual extension-compression modulus and its schematic diagram of deformation in the embodiment of the present invention 3；
Fig. 7 is the structural schematic diagram of display base plate in the embodiment of the present invention 4；
Fig. 8 is the structural schematic diagram that island, via hole and service bridge are assisted in Fig. 7；
Fig. 9 is the structural schematic diagram of display base plate in the embodiment of the present invention 6；
In attached drawing mark:
The viewing area 1-；The aperture area 10-；The island 11-；12- aperture；13- bridge；14- pixel；
2- non-display area；20- transition region；21- assists island；22- via hole；23- service bridge；24- auxiliary film；25- is non-to be opened
Porose area.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Formula is to the invention shows substrates and display device to be described in further detail.
The substrate of display base plate includes polyimide material (Polyimide, abbreviation PI), the study found that existing display base
The elasticity modulus of substrate in plate after aperture is about the 1/100 of the substrate of not aperture, between the pixel for causing viewing area aperture area
The reason of spacing difference phenomenon is that the deformation quantity of different zones aperture is different, i.e., the deformation quantity of the central area of viewing area is greater than side
The deformation quantity in edge region.Tracing it to its cause is, accumulation deformation occurs in the central area of viewing area, thereby results in the pixel of central area
Spacing is greater than the pel spacing of fringe region.Technical concept of the invention is, according to the structural relation of island, bridge and aperture, with
And the principle that the strain of substrate entirety is undertaken by the deformation of bridge, in other words by the island for opening up degree offer and undertaking strain of aperture
Bridge principle, by designing the aperture mode of different zones, so that different island bridge structures is obtained in different zones, so that substrate
Overall structure is different in the elasticity modulus of different zones, alleviates stress and concentrates.
Embodiment 1:
The present embodiment provides a kind of display base plates, can effectively solve viewing area because aperture deformation causes to show asking for difference
Topic.
A kind of display base plate, including substrate, substrate include at least viewing area, and substrate is formed in viewing area to be separated with aperture
The substrate on the multiple islands opened and connect with bridging, at least two different zones of viewing area has different elasticity modulus.Passing through will
The viewing area of substrate is divided into different regions, and adjusts separately elasticity modulus to different regions, to reduce viewing area
The accumulation deformation of central area, eliminates the central area of viewing area and the deformation difference of fringe region.
To viewing area carry out subregion when, substrate viewing area along pixel arrangement a direction (such as laterally or
Longitudinal either direction, or horizontal and vertical both direction simultaneously) different aperture areas, the lining of different aperture areas can be divided into
Bottom has dual extension-compression modulus.That is, the subregion of single direction or twocouese may be implemented, to the bullet of different subregions adjustment
Property modulus, thus targetedly according to Impact direction realize tensile stress buffering.According to the application scenarios of display base plate, this reality
Example is applied to select transversely in such a way that column carry out subregion as example.
Preferably, the different zones of substrate realize being alternately distributed for elasticity modulus by opening up different aperture modes,
To reduce deformation difference of the substrate after different zones stretching.In the different aperture area of elasticity modulus, aperture area has difference
Aperture size, and the area of the aperture of the biggish aperture area of elasticity modulus be less than the lesser aperture area of elasticity modulus aperture
Area.
The display base plate of the present embodiment, viewing area may be implemented in different zones in the aperture mode of different zones and obtain difference
Island bridge structure so that the overall structure of substrate is different in the elasticity modulus of different zones, to reduce the spacing between pixel
Difference avoids the difference of display effect.
Embodiment 2:
Under normal conditions, due to the difference of viewing area peripheral structure, stretchable deformation is in two mutually perpendicular directions
(such as Fig. 3, transverse direction X shown in Fig. 4 and longitudinal direction Y) has a case that different.As shown in Figure 1A, substrate further includes being located at viewing area
Two non-display areas 2 of 1 opposite side, substrate are divided into multiple aperture areas 10 in viewing area 1, have difference in different aperture areas 10
Elasticity modulus.
In Figure 1A, different 10 orientations of aperture area are identical, and substrate is alternatively set as the first elasticity in multiple aperture areas 10
Modulus and the second elasticity modulus, the first elasticity modulus are not equal to the second elasticity modulus.That is, the lesser region of elasticity modulus
Two sides be the biggish region of elasticity modulus, and the two sides in the biggish region of elasticity modulus be the lesser region of elasticity modulus, this
The alternate set-up mode of sample is able to achieve preferable balanced viewing area 1 in the effect of the deformation quantity of different zones.
Wherein, the structure of island, aperture and bridge can have different shapes, such as hole shape is rectangle, Figure 1B in Figure 1A
Middle hole shape is cross.Aperture in Figure 1A is with specific reference to the schematic diagram of Fig. 2, and aperture 12 therein is using rectangle as showing
Example.Preferably, line direction and column direction of the aperture 12 in viewing area 1 intert in a vertical manner opens up, and each aperture 12 is at it
Length direction divides equally corresponding two adjacent islands 11 and forms the bridge 13 connecting with an island 11, aperture 12 in the last portion of aperture 12
Width c2 be equal to the length b1 of bridge 13, the length c1 of aperture 12 is equal to the distance between adjacent two aperture 12 in its width direction
And the difference of two bridges, 13 width.Above-mentioned island 11, bridge 13, aperture 12 matching relationship under, via island 11, bridge 13 formed one connection
Constantly, with the substrate of hollow out.
The structure on island 11, aperture 12 and bridge 13 in Fig. 2 is reduced to rectangular configuration.Single island 11 generally has identical
Length and width, the size for the pixel (such as luminescent device) that the size on island 11 is arranged by its top determines, it is contemplated that actually
Wiring needs, and the size on island 11 is typically larger than the size of pixel.The width b2 of bridge 13 can be according to the luminescent device being arranged above island
Walk how much number of lines determines, it is generally the case that it is roomy to walk the more then bridges of number of lines, and it is small to walk the few then bridge width of number of lines；The length of bridge 13
Degree b1 is identical as the width c2 of aperture 12, and bridge 13 to be connected between adjacent island 11.In the case where identical drawing force,
The deformation quantity of the size of different apertures 12 is different, and the size by changing island bridge can change tensile property.From another point of view
It sees, since island 11 and bridge 13 are that substrate opens up the reservation part after aperture 12, the size of island 11 and bridge 13 is to a certain extent
It can be considered the size for being decided by aperture 12, therefore can be by adjusting the size of aperture 12 before the size constancy for guaranteeing island 11
It puts, realizes the adjusting of different zones dual extension-compression modulus.In the identical situation of viewing area area, the width c2 of aperture 12 is small
The region of (spacing between i.e. adjacent island 11 is small), length c1 small (size on i.e. island 11 is small to a certain extent), with aperture 12
Width c2 big (spacing between i.e. adjacent island 11 is big), length the c1 big size of island 11 (be to a certain extent big) region
Compare, the former have bigger island distribution density and bigger elasticity modulus.
With specific reference to Fig. 2, in aperture area 10, the size on island 11 can be determined by the relative position between two neighboring aperture 12
Fixed, particularly: the length a1 on island 11 determines by the relative position between the two neighboring aperture 12 that arranges on a direction, island 11
Width a2 can be determined by the relative position between the two neighboring aperture 12 that is arranged on other direction, the length a1 and width on island 11
It is generally equal to spend a2.The width b2 of bridge 13 can determine by the relative position between the two neighboring aperture 12 that is arranged perpendicularly,
The length b1 of bridge 13 can be determined by the width c2 of aperture 12.Therefore, in the case where not changing the size of aperture 12, pass through change
The setting position of aperture 12 changes the size on island 11 and the width b2 of bridge 13, it can obtains island 11 appropriate and bridge 13 cooperates
Structure, and obtain the elasticity modulus met the requirements.It is of course also possible to pass through while adjusting size and the position of aperture 12, obtain
13 fit structure of island 11 appropriate and bridge, and obtain the elasticity modulus met the requirements.
In the substrate that two adjacent aperture areas 10 are arranged alternately elasticity modulus, it is respectively set for the left and right sides non-display
The case where area 2, realizes lateral X partition, the deformation being limited in longitudinal Y-direction.In Fig. 3, E1, E2 are two different elasticity
Modulus region is alternately arranged respectively.Wherein, alternately arranged mode can be the elasticity modulus not phase so that in two end regions
Together, for example, E1-E2-E1-E2 mode, or be E2-E1-E2-E1 mode；Or so that it is in the elasticity of two end regions
Modulus is identical, for example, E1-E2-E1-E2-E1 mode, or is E2-E1-E2-E1-E2 mode.The present embodiment is to be arranged as
E2-E1-E2-E1-E2 mode is as example.
In one embodiment, substrate is in the different aperture area 10 of elasticity modulus, such as in the region E1 and the region E2
In: island 11 is of the same size (certain island 11 or different sizes), and the bridge 13 between adjacent island 11 has difference
Length b1.Substrate is in the identical aperture area 10 of elasticity modulus, such as in the region E1, island 11 is of the same size, phase
The length b1 having the same of bridge 13 between adjacent island 11；Or in the region E2: island 11 is of the same size, adjacent island 11 it
Between the length b1 having the same of bridge 13.Since island 11 is of the same size, intersection of the substrate in different zones
The figure of 13 part of island 11 and bridge of reservation more matches, and the abnormity that can effectively avoid the formation of intersection is bad.
Regional area setting sizes aperture 12 and single kind of size aperture 12 when, not according to the shape of aperture
Together, it will appear the phenomenon that extending out or inside contracting after stress.For example, being as shown in Figure 3 and Figure 4 substrate in longitudinal Y-direction
The phenomenon that extending out, hole shape are rectangular configuration shown in figure 1A；Substrate in longitudinal Y-direction the phenomenon that inside contracting, aperture
Cross-shaped structure as shown in Figure 1B for shape.
Under conditions of identical stretching, in the display base plate that Fig. 3 has the aperture area 10 of multiple and different elasticity modulus,
The elasticity modulus in the region E1 is greater than the elasticity modulus in the region E2, i.e. E1 > E2.Under identical stress condition, elasticity modulus is small
E2 area substrate deformation quantity is bigger, but simultaneously non-fully undertakes all deformation quantities by this region E2, is located at the region E2
The big region E1 of the elasticity modulus of two sides will also undertake the deformation quantity of a part, therefore the whole deformation quantity of substrate is smaller.As it can be seen that
Elastic modulus difference appropriate allows deformation quantity to be distributed in twoth area, and between twoth adjacent area alternately, so as to effective
Reduce the deformation difference after display base plate stretches.At this point, the difference in size being preferably provided between E1 and E2 cannot be excessive, for example,
E2 is 70% or more of E1, i.e. E2=(70%~99%) E1.
After being stretched, the largest deformation of the display base plate shown in Fig. 3 appears in the lesser partial region of elasticity modulus
In, and largest deformation amount is D1；In the design of single aperture 12 of the display base plate shown in Fig. 4, the elasticity modulus of whole region
Size, that is, corresponding elasticity modulus in the region E2 size, the intuitive visible central area in viewing area 1 extends out ratio from Fig. 4
Fringe region is serious, and largest deformation amount is D2.Tool test result also indicates that, D2 > D1.Compared to Fig. 3 and Fig. 4, it is seen that using more
After the aperture area 10 of a subregion is designed, the largest deformation amount of substrate can be made to reduce.
Preferably, the length of bridge 13 is equal to the width of aperture 12, and the width on island 11 is greater than the width of bridge 13, the width of bridge 13
Degree is at least the width of a cabling, such as 1-10 μm of width of bridge 13.It, can be by a plurality of cabling at one when cabling is a plurality of
For laid out in parallel above bridge 13, bridge is wide at this time is at least the sum of a plurality of trace width in plane；It can also be by a plurality of cabling more
The overlay of a plane upper layer should arrange and be arranged in 13 top of bridge, at this time the wide width for being slightly larger than a cabling of bridge.
With reference to island shown in fig. 5-bridge two-dimensional analog structure test result, the ratio between width of the width on island 11 and bridge 13 model
It encloses when being 5-20, under the parameter of different islands 11, bridge 13 and aperture 12, measures and show base under the effect of same stretch power
The whole deformation quantity of plate sample, and to make display base plate sample occur what identical whole deformation quantity (such as 3%) applied
The elasticity modulus being calculated in the case of drawing force.Test result is shown: under identical stress condition, the width and bridge 13 on island 11
Width it is smaller when there is lesser whole deformation quantity；And as the ratio between width of the width on island 11 and bridge 13 increases,
Whole deformation quantity under identical stress condition is gradually increased.It can be viewing area 1 in different zones according to the test result of Fig. 5
The configuration of island-bridge structure elasticity modulus provides reference.
As it can be seen that the design of the different aperture areas 10 in viewing area 1, the friendship for realizing elasticity modulus is designed by different apertures 12
For distribution, during stretching, deformation occurs for the small area preference of elasticity modulus so that each elasticity modulus it is small region it is equal
Occur larger deformation phenomenon, and the big region of the elasticity modulus for being located at its two sides can play certain inhibition to deformation phenomenon and make
With, therefore by the design of this alternating spring modulus distribution, it may be implemented the amount of extending out of substrate entirety being distributed to each bullet
Property the different region of modulus in (can similarly deduce, it is different suitable for the neck-in of substrate entirety is distributed to each elasticity modulus
Region in), the effect that deformation difference after being stretched reduces.
The preparation of the display base plate can correspond to the part material that need to open up aperture 12 in the substrate by removing flood structure
Material is formed.Particularly, substrate is placed on glass first, by defining substrate yellow light Exposure mode in patterning processes
Figure, and the processing procedure that the material of 12 corresponding region of aperture is worn in digging is carried out by development, etching mode, so that it is continuous to form connection
, substrate with hollow out.
The display base plate of the present embodiment can provide the cloth of the alternating spring modulus of a cycle by open-celled structure compensation
Office, can reduce difference of the deformation quantity of aperture between different zones, such mode can solve the viewing area of display base plate
In unitary elasticity modulus aperture area problem of stress concentration, guarantee the spacing equiblibrium mass distribution between pixel, to solve display base plate
The display difference problem for unevenly causing luminescent device spacing difference to generate because of tensile deformation.
Embodiment 3:
On the basis of embodiment 1, the display base plate in the present embodiment additionally uses on the basis of open-celled structure compensates
Pixel compensation.By the different spacing between setting pixel, apply a precompensation, before stretching to substrate for contracting
Spacing difference between pixel in the back substrate of small stretching, with solve pel spacing it is different and caused by show difference problem.
For different pixel compensations, if aperture widths are not identical in the region E1 and the region E2, the adjacent island before stretching
The distance between it is not identical, aperture deformation is also different after stress, and the distance between pixel is driven to tend to be identical.In practical application
In, when carrying out pixel compensation for this kind of situation, under needing to consider that both aperture area elasticity modulus and the initial spacing of pixel are comprehensive
Deformation results.
In one embodiment, as shown in fig. 6, substrate the different aperture area 10 of elasticity modulus the region E1 and the area E2
In domain: island 11 has different sizes (certain island 11 or identical size), and the bridge 13 between adjacent island 11 has not
Same length b1.Substrate is in the region E1 or the region E2 of the identical aperture area 10 of elasticity modulus: island 11 is of the same size,
The length b1 having the same of bridge 13 between adjacent island 11.Here it will be understood that the area of the pixel due to 11 top of island
The often below area on island 11 is the effect that can more intuitively show pixel compensation, here with imaginary pixel 14 to be formed
Rather than island 11 is shown, F1, F2 therein represent the distance between two adjacent pixels before stress, and F1 ', that F2 ' represents two is adjacent
Distance between pixel after stress.
In the display base plate that Fig. 6 has the aperture area 10 of multiple and different elasticity modulus, if the elasticity modulus in the region E1 is big
Elasticity modulus in the region E2, i.e. E1 > E2；Also, the aperture 12 of corresponding aperture area 10 is sized to difference, the specially area E1
The width of the aperture 12 in domain is greater than the width of the aperture 12 in the region E2.The aperture 12 in the corresponding region aperture area E1 makes adjacent pixel
Spacing between 14 is F1, and the aperture 12 in the corresponding region aperture area E2 makes the spacing between adjacent pixel 14 be F2, have F1 >
F2.During stretching due to the small E2 area preference deformation of elasticity modulus and deformation quantity is bigger, the area elasticity modulus great E1
Domain deformation quantity is smaller.After stretching, the former spacing F1 between adjacent pixel 14 is deformed into width F1 ', adjacent pixel 14 it
Between former spacing F2 to be deformed into width be F2 ', due to E1 > E2, the deformation quantity in the region E1 is less than the deformation quantity in the region E2, i.e.,
△ F1<△ F2 finally makes F1 '=F2 ' in conjunction with F1>F2.
Thus, it could be seen that can be by the region small in elasticity modulus, to picture when designing pixel (such as luminescent device) position
Plain position provides a precompensation, so that the pel spacing in the region E1 is greater than the pel spacing in the region E2, that is, in springform
The spacing on the island 11 of amount large area design is greater than the spacing on the island 11 of elasticity modulus smaller area.To stretched using substrate
When elasticity modulus large area the spacing on island 11 change what the spacing on smaller, elasticity modulus smaller area island 11 changed greatly
Phenomenon so that the amount of pre-compensation that is set is offset so that the spacing on the island 11 in dual extension-compression modulus region it is identical after the stretch or
It is close, and then reduce the difference of pel spacing.
As it can be seen that the aperture area 10 using multiple subregions is designed, and using suitable 12 dimensional fits of aperture, utilize springform
The different phenomenons for making the deformation of aperture 12 different of amount, realize pixel compensation on the basis of structure compensation, can effectively reduce drawing
Deformation difference after stretching preferably avoids pel spacing disparity compensation, so that the display effect after stretching is improved.
To sum up, in the present embodiment the pixel compensation of display base plate be the distance between the preceding pixel difference based on stretching and
The distance between pixel tends to what same principle compensated after stretching, what the size by designing different zones aperture determined
The distance between adjacent island difference and elastic modulus difference, the difference of aperture deformation, makes after being stretched using this disparity compensation
Bore size width reaches unanimity, and is also achieved that the equilibrium of distance between pixel.
The aperture mode of display base plate in embodiment 1- embodiment 3, being alternately distributed for elasticity modulus can be by changing island
Size, change aperture size realize.Elasticity modulus is alternately distributed, and the deformation quantity of different bore sizes is different, can be had
Effect reduces the central area of viewing area and the deformation difference of fringe region, solves display effect caused by deformation unevenly after stretching
Difference achievees the purpose that display compensation.
Embodiment 4:
It is found in actual experiment, the intersection in viewing area and non-display area, since non-display area is usually without opening
Hole design, leads to that viewing area is different from the elasticity modulus of two sides non-display area and difference is excessive so that the viewing area of substrate with it is non-
There is stress concentration phenomenon in viewing area intersection, be easy to happen fracture during stretching.To solve the above problems, this implementation
The display base plate that example provides, relative to embodiment 1- embodiment 3, moreover it is possible to effectively solve to be easy to make between viewing area and non-display area
The problem of at fracture.
It has been observed that viewing area 1 is different with the deformability of non-display area 2, the elastic modulus difference in two regions with reference to Fig. 7
It is different larger, it results in intersection structure and is easy to cause the phenomenon that being broken there are stress concentration phenomenon.As a result, in the embodiment
In, the elasticity modulus of non-display area 2 and 1 adjacent part of viewing area is adjusted, non-display area is arranged in the region close to viewing area
For transition region 20 (also being understood as the area dummy), the elasticity modulus of the substrate of transition region 20 be greater than the elasticity modulus of viewing area 1 and
Less than the elasticity modulus in other regions (hereinafter referred to as non-aperture area 25) of non-display area 2.
Preferably, the non-display area 2 of substrate two sides respectively includes non-aperture area 25 and is located at viewing area 1 and non-aperture area
The elasticity modulus of transition region 20 between 25, transition region 20 is gradually increased on the direction by the direction non-display area 2 of viewing area 1,
It is possible thereby to which the stress of intersection is distributed in entire transition region 20.Here in display base plate, viewing area 1, non-display area 2
Transition region 20 and non-aperture area 25 have different elasticity modulus.
In the display base plate of the present embodiment, by changing the structure of viewing area and non-display area intersection, so that this is aobvious
Show that structure modulus of elasticity of the substrate from non-display area to viewing area uniformly successively decreases, solves display base plate in viewing area and non-display area
Intersection problem of stress concentration.
Embodiment 5:
To solve the problems, such as that viewing area and non-display area intersection be easy to cause fracture, aperture area class is set with viewing area
Seemingly, as shown in fig. 7, the transition region 20 in non-display area 2 can be realized by setting via hole 22 to substrate elasticity modulus
Adjustment.
In one embodiment, on the basis of embodiment 4, as shown in figure 8, transition region 20 offers via hole 22,
Via hole 22 makes the substrate of corresponding transition region 20 form the multiple auxiliary for separating with via hole 22 and connecting with service bridge 23
Island 21, the adjacent spacing assisted between island 21 are different from the spacing in viewing area 1 between adjacent island 11.
Preferably, the auxiliary island Dao21He 11 is similar, i.e. the graphics shape on the auxiliary island Dao21He 11 is identical, but size is different
It is fixed equal, to simplify the structure design of display base plate.And for assisting the size on the island Dao21Yu 11 not require, only need
Meet substrate transition region 20 elasticity modulus be greater than viewing area 1 elasticity modulus and be less than 2 other regions of non-display area bullet
Property modulus.
In the present embodiment, the via hole 22 by the aperture 12 of viewing area 1 and transition region 20 is set as different from, thus
Size by adjusting via hole 22 obtains auxiliary island 21 appropriate and the integrated structure of service bridge 23 is able to satisfy requirement to obtain
Elasticity modulus.With reference to Fig. 2 and Fig. 8, the size on the auxiliary island 21 of transition region 20 is equal to the size on the island 11 of aperture area 10, transition
The length B1 of the service bridge 23 in area 20 is greater than the length b1 of the bridge 13 of aperture area 10, and the elasticity modulus of transition region 20 is greater than viewing area
1 elasticity modulus, but it is less than the elasticity modulus of the non-aperture area 25 of non-display area 2.
Specifically, transition region 20 can be in the size item identical with the size on island 11 in viewing area 1 for guaranteeing auxiliary island 21
Under part, by changing the width of service bridge 23, for realization substrate in the adjustment of the regional structure elasticity modulus, service bridge 23 is wider,
Structure modulus of elasticity is bigger, and deformation is smaller.The gradual change of 20 elasticity modulus of transition region is realized by the width gradual change of service bridge 23
Distribution, to realize that the stress that will focus on viewing area 1 and 2 intersection of non-display area is distributed to the effect in transition region 20.
Embodiment 6:
It, can also be to display base plate to solve the problems, such as that viewing area 1 and the intersection of non-display area 2 be easy to cause fracture
Transition region 20 adds film layer structure to realize.The display base plate of the present embodiment is corresponding to transition on the basis of embodiment 5
Auxiliary film is additionally provided with above the substrate in area 20, the thickness of auxiliary film is in the direction for being directed toward other regions of non-display area by viewing area
It is upper to be incremented by.
As shown in figure 9,22 size of via hole of transition region 20 is identical as the size of aperture 12 in the aperture area 10 of viewing area 1
Or it is not identical, increase and adjusts the auxiliary film 24 of elasticity modulus further to change the thicknesses of layers of transition region 20.The auxiliary film 24
Gradually changing for elasticity modulus is realized by the film thickness gradually changed, specifically: auxiliary film 24 is by adjacent non-aperture area 25
It is directed toward on the direction of viewing area 1, film layer is gradually thinned, and the elasticity modulus of substrate is gradually reduced.
The display base plate marks off the transition region 20 of elasticity modulus gradual change, has deferred to that 1 deformation of viewing area is big, non-display area 2
The small status of deformation is adjusted using film thickness by increasing auxiliary film 24 and realizes that the elasticity modulus of transition region 20 is greater than viewing area 1
Elasticity modulus, but it is less than the elasticity modulus of the non-aperture area 25 of non-display area 2, viewing area 1 is advantageously implemented to non-display area 2
Stress dispersion.
Wherein, auxiliary film 24 uses in silicon nitride material, silica material, polyimide material or titanium metal material extremely
A kind of few formation.Auxiliary film 24, simple process, yield height are done using above-mentioned material.Certainly, due to being prepared above display base plate
During luminescent device, it usually needs form other film layers, therefore only need in preparing luminescent device guarantor while film layer
It stays and adjustment member film layer is corresponding to the thickness in transition region 20 can form auxiliary film 24, i.e. auxiliary film 24 and photophore
Part film layer is made of same procedure in part, to realize the change of 20 elasticity modulus of transition region.
The display base plate of the present embodiment, by transition region add auxiliary film and change film layer structure (increase film thickness) come pair
The part of display base plate carries out enhancing processing, so as to adjust the elasticity modulus of viewing area and non-display area intersection, effectively solves
Problem of stress concentration of the display base plate in viewing area and the intersection of non-display area.
Embodiment 7:
The present embodiment provides a kind of display devices, including any display base plate of above-described embodiment 1- embodiment 6, island top
For luminescent device to be arranged, it is used to be arranged the cabling of luminescent device above bridge.
During preparing the display device, substrate is placed on glass first, prepares thin film transistor (TFT) on substrate
(TFT) device；Then, by the way that substrate is defined figure with yellow light Exposure mode in patterning processes, pass through development, etching mode
Dig the processing procedure for the material for wearing aperture corresponding region, so that connection of the formation with island, bridge is continuous, the lining with hollow out
Bottom；Then, pixel confining layer is formed, luminous organic material vapor deposition and encapsulation are carried out；Finally by substrate with glass is isolated can
The display device of stretching.
In the display device, luminescent device therein can be OLED pixel or QLED device, which can
With are as follows: desktop computer, tablet computer, laptop, mobile phone, PDA, GPS, car-mounted display, Projection Display, video camera, number
Camera, calculator, electronic instrument and meter, liquid crystal display panel, Electronic Paper, television set, display, Digital Frame, is led at electronic watch
Any products or components having a display function such as boat instrument can be applied to the multiple fields such as public display and illusory display.
The display device, one side viewing area is because showing that difference is small caused by deformation, another aspect viewing area and non-display
Easy fracture is not allowed between area, therefore there is good physical property and display performance, so as to effectively promote display effect.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (15)
1. a kind of display base plate, including substrate, the substrate includes at least viewing area, the substrate the viewing area formed with
Multiple islands that aperture is separated and connect with bridging, which is characterized in that the lining of at least two different zones of the viewing area
Bottom has different elasticity modulus.
2. display base plate according to claim 1, which is characterized in that the substrate is divided into multiple open in the viewing area
Porose area has different elasticity modulus in the different aperture areas.
3. display base plate according to claim 2, which is characterized in that the substrate is arranged alternately in multiple aperture areas
For the first elasticity modulus and the second elasticity modulus, first elasticity modulus is not equal to second elasticity modulus.
4. display base plate according to claim 2, which is characterized in that the substrate aperture different in elasticity modulus
Qu Zhong: the island is of the same size, and the bridge between the adjacent island has different length.
5. display base plate according to claim 2, which is characterized in that the substrate aperture different in elasticity modulus
Qu Zhong: the island has different sizes, and the bridge between the adjacent island has different length.
6. display base plate according to claim 4 or 5, which is characterized in that the substrate is identical described in elasticity modulus
In aperture area: the island is of the same size, the bridge length having the same between the adjacent island.
7. display base plate according to claim 2, which is characterized in that the substrate aperture different in elasticity modulus
Qu Zhong, the area of the aperture of the biggish aperture area of elasticity modulus are less than the institute of the lesser aperture area of elasticity modulus
State the area of aperture.
8. according to the described in any item display base plates of claim 4-7, which is characterized in that the length of the bridge is equal to the aperture
Width, the width on the island is greater than the width of the bridge, and the width of the bridge is at least the width of a cabling.
9. display base plate according to claim 1-7, which is characterized in that the substrate further includes being located at described show
Show that the non-display area of area two sides, the non-display area include the transition region adjacent with the viewing area, the substrate is in the mistake
Cross area elasticity modulus be greater than the viewing area elasticity modulus and be less than other regions of non-display area elasticity modulus.
10. display base plate according to claim 9, which is characterized in that the elasticity modulus of the transition region is by described aobvious
Show area to be directed toward on the direction in other regions of non-display area to be gradually increased.
11. display base plate according to claim 9, which is characterized in that the substrate is formed in the transition region to assist
Hole separates and with multiple auxiliary island that service bridge connects, and the adjacent spacing assisted between island is different from the adjacent island
Between spacing.
12. display base plate according to claim 11, which is characterized in that the auxiliary island is similar with the island.
13. display base plate according to claim 11, which is characterized in that the substrate is corresponding to the upper of the transition region
Side is provided with auxiliary film, and the thickness of the auxiliary film is on the direction for being directed toward other regions of non-display area by the viewing area
It is incremented by.
14. display base plate according to claim 13, which is characterized in that the auxiliary film is using silicon nitride material, oxidation
The formation of at least one of silicon materials, polyimide material or titanium metal material.
15. a kind of display device, which is characterized in that including the described in any item display base plates of claim 1-14, on the island
Side is used to be arranged the cabling of the luminescent device for luminescent device to be arranged above the bridge.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465167.XA CN109599402B (en) | 2018-12-03 | 2018-12-03 | Display substrate and display device |
| PCT/CN2019/122392 WO2020114349A1 (en) | 2018-12-03 | 2019-12-02 | Display substrate and display device |
| US17/041,176 US11539010B2 (en) | 2018-12-03 | 2019-12-02 | Display substrate and display device in which difference in deformation between central and peripheral portions of display region is eliminated during stretch or compression |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811465167.XA CN109599402B (en) | 2018-12-03 | 2018-12-03 | Display substrate and display device |
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| CN109599402B CN109599402B (en) | 2021-02-09 |
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| CN201811465167.XA Active CN109599402B (en) | 2018-12-03 | 2018-12-03 | Display substrate and display device |
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| US (1) | US11539010B2 (en) |
| CN (1) | CN109599402B (en) |
| WO (1) | WO2020114349A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20210013434A1 (en) | 2021-01-14 |
| WO2020114349A1 (en) | 2020-06-11 |
| US11539010B2 (en) | 2022-12-27 |
| CN109599402B (en) | 2021-02-09 |
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